Wireless sensor and body area networks ‎(‎WSN and WBAN respectively‎)‎ have been seen as a future way to monitor humans‎'‎ psycho‎-physiological signs remotely‎.‎ There are a number of standards that could be used for building WBAN systems‎.‎ However‎,‎ wireless UWB networks based on IEEE 802.15‎.‎4a offer the advantages of a large frequency range and low power spectral density‎,‎ making it suitable for both WSNs and WBANs used for medical applications‎.‎ The technology has matured sufficiently that it can be used to develop products for the marketplace‎.‎ This book presents how the IEEE802.15‎.‎4‎-2011 ‎(‎former IEEE802.15‎.‎4a‎)‎ can be used in wireless body area networks ‎(‎WBAN‎)‎ for healthcare and welfare related applications‎.‎ It gives a short overview on the IEEE802.15‎.‎4 family and then gives details of IEEE802.15‎.‎4‎-2011 based solutions‎.‎ It presents how the IEEE802.15‎.‎4‎-2011 ‎(‎former IEEE802.15‎.‎4a‎)‎ can be used in wireless body area networks ‎(‎WBAN‎)‎ for healthcare and welfare related applications‎.‎ It gives a short overview on the IEEE802.15‎.‎4 family‎.‎ It gives details of IEEE802.15‎.‎4‎-2011 based solutions‎.‎